Magnetic circuit having low reluctance

Abstract

A magnetic circuit which exhibits low reluctance on the path of a magnetic flux and comprises at least one anisotropic thin film formed of an iron-nickel-chromium alloy through which said magnetic flux passes in the hard direction of magnetization of the film.

What we claim is: 
     
       1. A magnetic element comprising an alternate stack of anisotropic thin films of Fe-Ni-Cr alloy having an easy axis of magnetization and a hard axis of magnetization, a demagnetizing field and a coercive field and of non-magnetic insulating thin films, the demagnetizing field of two successive films of Fe--Ni--Cr being in opposite directions, said Fe--Ni--Cr films being even in number and said non-magnetic insulating films having a thickness providing a value of the difference between the emagnetizing fields of two successive films of Fe--Ni--Cr alloy equal at a maximum to the value of the coercive field of each Fe--Ni--Cr film. 
     
     
       2. The magnetic element as described in claim 1, said non-magnetic layers being formed of SiO.